Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-12-12
Phys.Rev. D69 (2004) 073003
Physics
High Energy Physics
High Energy Physics - Phenomenology
21 pages, 6 figures; more references added
Scientific paper
10.1103/PhysRevD.69.073003
Radiative corrections to neutrino mixing and CP violation are analyzed in the minimal seesaw model with two heavy right-handed neutrinos. We find that textures of the effective Majorana neutrino mass matrix are essentially stable against renormalization effects. Taking account of the Frampton-Glashow-Yanagida ansatz for the Dirac neutrino Yukawa coupling matrix, we calculate the running effects of light neutrino masses, lepton flavor mixing angles and CP-violating phases for both $m_1 =0$ (normal mass hierarchy) and $m_3 =0$ (inverted mass hierarchy) cases in the standard model and in its minimal supersymmetric extension. Very instructive predictions for the cosmological baryon number asymmetry via thermal leptogenesis are also given with the help of low-energy neutrino mixing quantities.
Mei Jian-wei
Xing Zhi-zhong
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